[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f_lszjeKizIgFceLztrfINRMno-LbJIbQw717yT96Nnc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-06-13 12:53:02",199823133,[8,9,10,11],"惯性耦合;弹性耦合;解耦","弹性耦合;惯性耦合;解耦","弹性耦合;惯性耦合;耦合","惯性耦合;弹性耦合;耦合",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},15,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","a7620b56c1fc4d2f9026a0d163ef62c6","双自由度系统的振动","静力耦合又称( );动力耦合又称( );当选用主坐标后微分方程会( )",[21,33,41,49,57,65,74,82,85,94],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-06-13 12:53:01",199823100,[26,27,28,29],"自由振动","强迫振动","自激振动","参数振动","振动系统只在初始条件作用下的振动称为( )振动","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":40,"source":31,"type":32},[],199823104,[37,38,39],"外部激励的频率","较小的固有频率","较大的固有频率","当一个二自由度系统受到简谐激励时,系统以( )振动",{"answer":42,"createTime":23,"id":43,"options":44,"question":48,"source":31,"type":32},[],199823109,[45,46,47],"一个主振型","两个主振型","多个主振型","二自由度系统具有( )",{"answer":50,"createTime":23,"id":51,"options":52,"question":56,"source":31,"type":32},[],199823114,[53,54,55],"耦合的","非耦合的","线性的","一般情况下,二自由度系统的运动微分方程是( )",{"answer":58,"createTime":23,"id":59,"options":60,"question":64,"source":31,"type":32},[],199823118,[61,62,63],"固有振型","固有频率","解","系统以其某一阶固有频率振动时的形态称为( )",{"answer":66,"createTime":23,"id":67,"options":68,"question":73,"source":31,"type":32},[],199823123,[69,70,71,72],"耦合的微分方程组","耦合的代数方程组","非耦合的代数方程组","非耦合的微分方程组","二自由度系统的微分运动方程的一般形式为( )",{"answer":75,"createTime":5,"id":76,"options":77,"question":81,"source":31,"type":32},[],199823129,[78,79,80],"质量块的数目","质量块的数目和每个质量块的自由度数","描述每个质量块位置所用的坐标的数目","振动系统的自由度数取决于( )",{"answer":83,"createTime":5,"id":6,"options":84,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":86,"createTime":87,"id":88,"options":89,"question":92,"source":31,"type":93},[],"2025-06-13 12:55:04",199824200,[90,91],"正确","错误","主模态也叫主振型",3,{"answer":95,"createTime":87,"id":96,"options":97,"question":98,"source":31,"type":93},[],199824201,[90,91],"广义坐标是线性相关的"]